Mitsubishi Electric CM33-TL, Руководство пользователя

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B-3
MAN-0CM33-001 MC Series Computers
APPENDIX B - TROUBLESHOOTING
3. Verify that the onboard LPT port’s I/O address and IRQ settings are
configured correctly.
4. Verify that the attached device works by attaching it to a parallel port
that is working and configured correctly. If it works, the printer can be
assumed to be in good condition. If the printer remains inoperative,
replace the printer cable and try again.
Serial Port
The serial device doesn’t output anything or is outputting garbled char-
acters.
1. Make sure that the serial device’s power is turned on and that the
device is on-line.
2. Verify that the device is plugged into the correct serial port on the rear
of the computer.
3. Verify that the attached serial device works by attaching it to a serial
port that is working and confgured correctly. If the serial device does
not work either, the cable or the serial device has a problem. If the
serial device works, the problem may be due to the onbaord I/O or the
address setting.
4. Make sure the COM settings and I/O address are configured correctly.
Keyboard
Nothing happens when a key on the keyboard was pressed.
1. Make sure the keyboard is properly connected.
2. Make sure there are no objects resting on the keyboard and that no
keys are pressed during the booting process.
System Board
1. Make sure the add-in card is seated securely in the expansion slot. If
the add-in card is loose, pwer off the system, re-install the card and
power up the system.
2. Check the jumper settings to ensure that the jumpers are properly set.
3. Verify that all memory modules are seated securely into the memory
sockets.
4. Make sure the memory modules are in the correct locations.
5. If the board fails to function, place the board on a flat surface and
seat all socketed components. Gently press each component into the
socket.
6. If you made changes to the BIOS settings, re-enter setup and load
the BIOS defaults.